There is some speculation that the B-2 has a small nuclear reactor onboard, that suposedly powers an electrogravity system that reduces the mass of the plane and payload by 89%. See here
It's not every day that you see people speculating to two significant digits.
As far as the b-2 - being electrogravinometric, I seriously doubt that. it is 1970's-early 80's technology. And as far as airmen being electrocuted, that may be. All aircraft build up charges of static electricity and the first thing a ground crew does after landing and chocking the wheels is to ground the plane. As the b-2 has some special coatings, it may be quite possible that it becomes a giant super capacitor.